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Two nanow wires are separated by 1.2 nm as measured by STM. Inside the wires the potential energy is zero, but between the wires the potential energy is greater than the electron's energy by only 1.4 eV. Estimate the probability that the electron passes from one wire to the other.
A spherical hydrogen-filled balloon is used to lift a load of 5705 N (in addition to the weight of the hydrogen). Find the minumum necessary radius for the balloon
Reflecting telescope is built with a 20-cm-diameter mirror having a 1.00m focal length. It is used with a eyepiece 10X, What is the magnification of the telescope
A person wants to push an 80-kg box across the floor. The coefficient of friction between the box and the floor is 0.5. What is the normal force experienced by the box as it sits on the floor
a 15.0-v battery is connected to a capacitor resulting in 55.0 microc of charge stored on the capacitor. how much
A computer to be used in a satellite must be able to withstand accelerations of up to 23 times the acceleration due to gravity. What is the minimum amplitude of vibration that must be used in this test
A spherical conductor with radius 2.00 cm is centered on the origin and holds charge q1=-250 nC, Find the surface charge density a(charge per area) on the outside surface of the outer spherical shell
A worker pushes a 34 kg block 13m along a level floor at constant speed with a force directed 38° below the horizontal. If the coefficient of kinetic friction between block and floor was 0.19.
A 13.5?F capacitor is connected to a power supply that keeps a constant potential difference of 26.0V across the plates. By how much did the energy change during the insertion
A thin metallic spherical shell of radius 41.6 cm has a total charge of 8.05 ?C uniformly distributed on it. At the center of the shell is placed a point charge of 2.83 C. What is the electric field at a distance of 23.9 cm from the center of the ..
During the year, the company sold a division which had revenue and expenses (not comprised in the previous figures) of $100,000 and $75,000, respectively. The division was sold at a loss of $55,000. All items are subject to an income tax rate of 4..
You measure an electric field of 1.35×106N/C at a distance of 0.141m from a point charge. There is no other source of electric field in the region other than this point charge. What is the electric flux through the surface of a sphere that has thi..
Four identical metallic objects carry the following charges: +5.0 µC, +5.0 µC, -8.2 µC, and -4.0 µC. What is the final charge on each object
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